Add boilerplate unit test code to currently untested modules

.codecheckignore

@@ -35,4 +35,3 @@
 ^UNITTESTS
 ^storage/blockdevice/tests/UNITTESTS
 ^storage/kvstore/tests/UNITTESTS
-^drivers/tests/UNITTESTS

drivers/tests/UNITTESTS/AnalogIn/CMakeLists.txt

@@ -0,0 +1,31 @@
+# Copyright (c) 2021 ARM Limited. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+include(GoogleTest)
+
+set(TEST_NAME analogin-unittest)
+
+add_executable(${TEST_NAME})
+
+target_compile_definitions(${TEST_NAME}
+    PRIVATE
+        DEVICE_ANALOGIN
+        MBED_CONF_TARGET_DEFAULT_ADC_VREF=3.3f
+)
+
+target_sources(${TEST_NAME}
+    PRIVATE
+        ${mbed-os_SOURCE_DIR}/drivers/source/AnalogIn.cpp
+        test_analogin.cpp
+)
+
+target_link_libraries(${TEST_NAME}
+    PRIVATE
+        mbed-headers-platform
+        mbed-headers-hal
+        mbed-headers-drivers
+        mbed-stubs-hal
+        mbed-stubs-platform
+)
+
+gtest_discover_tests(${TEST_NAME} PROPERTIES LABELS "drivers")

drivers/tests/UNITTESTS/AnalogIn/test_analogin.cpp

@@ -0,0 +1,31 @@
+/* Copyright (c) 2021 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* This empty test file is present in order to generate coverage data for the
+ * corresponding source file. This file allows an executable CMake target to be
+ * created, which builds the corresponding source file and produces a .gcno
+ * file to be used by a coverage tool.
+ *
+ * Replace this main function with Google Test tests, as described in the
+ * Mbed OS documentation:
+ *
+ *      https://os.mbed.com/docs/mbed-os/latest/debug-test/unit-testing.html
+ *
+ */
+int main()
+{
+    return 0;
+}

drivers/tests/UNITTESTS/CMakeLists.txt

@@ -1,5 +1,6 @@
 # Copyright (c) 2021 ARM Limited. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 add_subdirectory(doubles)
+add_subdirectory(AnalogIn)
 add_subdirectory(PwmOut)
 add_subdirectory(Watchdog)

hal/tests/UNITTESTS/doubles/CMakeLists.txt

@@ -17,13 +17,15 @@ target_compile_definitions(mbed-stubs-hal
         DEVICE_PWMOUT
         DEVICE_WATCHDOG
         MBED_WDOG_ASSERT=1
+        DEVICE_ANALOGIN
 )
 
 target_sources(mbed-stubs-hal
     PRIVATE
         pwmout_api_stub.c
         us_ticker_stub.cpp
         watchdog_api_stub.c
+        analogin_api_stub.c
 )
 
 target_link_libraries(mbed-stubs-hal

hal/tests/UNITTESTS/doubles/analogin_api_stub.c

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2021 Arm Limited and affiliates.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "hal/analogin_api.h"
+#include <stddef.h>
+
+#if DEVICE_ANALOGIN
+
+void analogin_init_direct(analogin_t *obj, const PinMap *pinmap)
+{
+}
+
+void analogin_init(analogin_t *obj, PinName pin)
+{
+}
+
+void analogin_free(analogin_t *obj)
+{
+}
+
+float analogin_read(analogin_t *obj)
+{
+    return 0;
+}
+
+uint16_t analogin_read_u16(analogin_t *obj)
+{
+    return 0;
+}
+
+const PinMap *analogin_pinmap(void)
+{
+    return NULL;
+}
+
+#endif // DEVICE_ANALOGIN